what is variable hoisting in javascript

[mani]

let and const hoisting

Variables declared with let and const are also hoisted but, unlike var , are not initialized with a default value....

[mani]

the array can be created and initialize by using array constructor

const arr = new Array()...

[mani]

we have to find the length of the array and then we can iterate the array using for loop

Example

var a = [1,2,3,4]
for(let

...

[mani]

the array filter method will solve this problem

const arr = [1,2,3,"",4,5,""]
arr.filter(a=>a !== "&qu

...

[mani]

what is variable hoisting in javascript?

Please explain how its working

[mani]

use chrome developer tools to debug the javascript code:

press: command + shift + c to open chrome developer tool;

and will...

[mani]

Using Set:

const arr = ["a","b","a","c","b","a"];

function

...

[mani]

We can remove duplicates in multiple ways;

Filter Method:

const arr = ["a","b","a","c","b","a"];

...

[mani]

using setTimeout we can do this.

Example:

for (let i=0; i<10; i++) {
task(i);
}

function

...

[mani]

The delete operator deletes the property from the object

var user = {
name: "fname",
age: 25
}

...

[mani]

Iterate through object properties


using for in loops in javascript.

for (var prop in obj) {
// do stuff

...